41. Benign migratory glossitis or Geographic Tongue, manifests itself in the oral cavity as,

A. Irregularly outlined areas of hyperkeratosis of the dorsal surface of the tongue

B. Furrows outlined the dorsal surface radiating out from a central groove in the centre of the tongue

rC. Loss (atrophy) of filiform papillae in multiple irregularly outlined areas

D. Irregularly outlined erythematous area of hyper trophic fungiform

E. A fibrinous exudate on the dorsal surface

F. Grooves (fissures) radiating from a central fissure

G. Irregular area in the midline of the tongue

42. Which one of the following is true about oral hairy leukoplakia?

A. Associated with HIV virus infection and is commonly seen on the dorsal of the tongue

rB. Associated with HIV virus infection and is commonly seen on the lateral side of the tongue

C. Usually caused by Candida species

D. Always associated with trauma to the lateral side of the tongue

E. Always associated with pernicious anaemia

43. Which of the following have a tendency to recur if not treated?

A. Giant cell granuloma

rB. Lipoma

C. Fibrous epulis

D. Haematoma

E. Pulp polyps

44. Basal cell carcinoma is characterised by,

rA. Rapid growth and metastasis

B. Local cutaneous invasion

C. Inability to invade bone

D. Poor prognosis

E. Radiation resistance

F. Can not metastasise to the bone

45. Carcinoma of the tongue has a predilection for which of the following sites?**

A. Lateral border anteriorly

B. Anterior dorsal surface

C. Posterior dorsal surface

rD. Lateral border posteriorly

E. No preferred location

46. A patient presents complaining of a stomach upset 48 hours after starting a course of antibiotic for oral infection, this is an example of,

A. Type I allergic reaction

B. Nervous disorder

rC. Side effect of the drug

D. Type IV hypersensitivity reaction

E. Pyloric stenosis

47. Trichloroacetic acid, a strong acid, has been used by dentists for chemical cautery of hypertrophic tissue and aphthous ulcers; its mechanism of action is,

A. Thermodynamic action

B. Activation of tissue enzymes

C. Osmotic pressure

rD. Protein precipitation PPT

E. Neutralization

48. Which of the following adverse reaction of oral contraceptives is the most common and the most serious

A. Hypotension

B. Hepatotoxicity

C. Uterine neoplasia

rD. Thromboembolism disorder

E. Decreased resistance to infection

49. A patient who has been taking quantities of aspirin might show increased post operative bleeding because aspirin inhibits:**

rA. Synthesis of thromboxane A2 and prevents platelet aggregation

B. Synthesis of prostacyclin and prevents platelet aggregation

C. Synthesis of prostaglandin and prevents production of blood platelets

D. Thrombin and prevents formation of the fibrin network

E. Increase the absorption of vitamin K and prevents synthesis of blood clotting factors

50. A patient who recently had a calculus removed from the kidney presented with radiolucent area in the left maxilla with clinical evidence of swelling. The disease that you would immediately suggest is,

A. Diabetes

B. Thyrotoxicosis

rC. Hyperparathyroidism

D. Osteoporosis

E. Adrenal insufficiency

51. Typical features of Down’s syndrome (Mongolism) do not include:

A. A multiple immunodeficiencies

B. Sever caries but minimal periodontal disease

C. Susceptibility to infections

rD. Multiple missing teeth and malocclusion

E. Hepatitis B carriage in institutionalised patients

52. The patient whom you are about to treat, states that he has Von Willebrand’s disease. Which one of the following preoperative haematological analyses may reflect this disease:

rA. Bleeding time and factor VIII level

B. Bleeding time and factor IX level

C. Bleeding time and factor X level

D. Platelet count

E. Thromboplastin generation time

53. A 22 year old woman has acute gingival hypertrophy, spontaneous bleeding from the gingiva and complains of weakness and anorexia. Her blood analysis was as follows: HB=12gm, Neutrophils=90%, Monocytes=1%, Platelets=250000, WBC=100000, Lymphocytes=9%, Eosinophils=0% , The most likely diagnosis is:

rA. Myelogenous leukaemia B. Infectious mononucleosis /glandular fever/

C. Thrombocytopenic purpura D. Gingivitis of local aetiological origin

E. Pernicious anaemia /Vitamin B12 deficiency/